Do correlations create an energy gap in electronic bilayers? Critical analysis of different approaches

Details Do correlations create an energy gap in electronic bilayers? Critical analysis of different approaches Do correlations create an energy gap in electronic bilayers? Critical analysis of different approaches

1999-05-27

arxiv.org/abs/cond-mat/9905405v1

Phys. Rev. B, 59, 9870 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages

Scientific paper

10.1103/PhysRevB.59.9870

This paper investigates the effect of correlations in electronic bilayers on the longitudinal collective mode structure. We employ the dielectric permeability constructed by means of the classical theory of moments. It is shown that the neglection of damping processes overestimates the role of correlations. We conclude that the correct account of damping processes leads to an absence of an energy gap.

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